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. 2017 Mar 6;12:1803–1813. doi: 10.2147/IJN.S113366

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© 2017 Xia et al. This work is published and licensed by Dove Medical Press Limited

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Photoacoustic signal images of various substances.

Notes: The NH₄HCO₃ solution has a photoacoustic signal, the ammonia solution and dd H₂O have no photoacoustic signal. (A) NH₄HCO₃ solution. (B) Ammonia solution. (C) dd H₂O. The positive result is represented within the dotted lines.

Abbreviations: dd H₂O, double-distilled H₂O; NH₄HCO₃, ammonium bicarbonate.